DALLAS, June 9, 2011 /PRNewswire/ -- The time for a Mexican vacation or business trip has arrived! The ongoing partnership of Southwest Airlines (NYSE: LUV) and Mexican carrier, Volaris, can create some summer getaways with convenient, connecting service from more than 55 Southwest Airlines cities to the Mexican destinations of Mexico City, Guadalajara, Cancun, Morelia, and Zacatecas.